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How to Repair a Car Key Fob The key fob of yours is tossed around a lot, and the buttons could become stuck or damaged. If you need to, give it a once over and replace the battery. The majority of cars have batteries that look like coins. Full Document can purchase at pharmacies and big box stores, as well as home improvement retailers. Some models require programming equipment that is available only to dealers. Dead Battery The car key fob can make it easier to start your vehicle, and get into it. What happens if you press the button several times, but nothing happens? The most frequent reason for this is a dead battery. Fortunately, the battery is easy to replace. You can get replacements in auto parts stores and supermarkets and also at some home improvement stores. However, some of the other features that the key fob offers might not function. This could be due to a mechanical issue, an electrical problem or even a programming error in your car's receiver. In these instances it's best to contact a professional. Thankfully, the majority of manufacturers include a mechanical key slot inside the fob, which can be used in case of a dead battery. In the majority of cases the key slot is hidden behind a cover on the handle of the fob. The key's physical form can be put into the slot which will allow you to unlock your door and start your vehicle. Just don't forget to re-insert the key fob after you start your vehicle! If you have a Ford equipped with SYNC Connect, you can start the car by using the key fob. The cupholder in most Fords with SYNC Connect has a backup “E blade”. It is a mechanical key that can be used to press the starter button should your key fob not be able to start the car. To make the most of this feature, you should ensure that the battery is charged. You can also consult your owner's manual to find out how to do it. If you're still having issues with your car after changing the key fob battery it could be the right time to contact a locksmith or your dealership to have the battery replaced or repair the fob. In certain cases the key fob could be programmed to your vehicle with a new battery at the dealership or at certain Interstate All Battery Center locations. However, this can only be done if the circuit board and antennas have not been damaged. Damaged Buttons In the course of time, your car key fob's buttons are bound to undergo many wear and wear and tear. They are prone to dropping and are often sat in pockets and purses. This could cause internal components to get damaged or loose, which can cause them to not respond to your pressing. This problem can be fixed with a few easy steps, but you may also need to consult a locksmith. Aside from batteries that are dead, the most common reason why a key fob for a car won't work is that it requires new batteries. These tiny coin-shaped batteries are relatively inexpensive, and it's not difficult to find them in hardware stores or large-box retailers. You can also look up videos on YouTube and in your owner's manual which explain how to replace the battery on your key fob. However, it's important to know that some key fobs require a special procedure to enter the programming mode needed to change the battery. In these cases you'll have to consult your owner's manual and/or an auto locksmith that is reputable to ensure you're following the proper procedure. If you leave your key fob in extreme hot or cold temperatures could cause it to stop functioning in particular when the battery has failed. In this instance, you'll need to consult an automotive locksmith or your dealer for a replacement fob. If your key fob's buttons remain unresponsive it could be because the contacts inside are worn out. These contacts are rubber-like and coated with an electricity-conducting film, but they can start to wear out over time due to repeated use. You can remedy this issue by removing the key fob and placing an aluminum strip over the worn-out contacts. It's important to note that some key fobs can be difficult to open and can't be opened with confidence without the right equipment only available at a dealership. If you try to open yours using an instrument like a screwdriver or other, it's possible you could break the circuit board inside, and pay an expense for repairs that is higher than you would have required. Circuit Board Issues If your key fob is in a position to unlock the doors of your car and start your engine however, it's not functioning as well as it did previously, the problem may be with the circuit board. The circuit board is an electronic chip in the case that sends signals to your car, telling it to shut your doors, open the trunk, or turn off your ignition. If the circuit board is damaged the key fob won't be able transmit these signals. Repairing damaged circuit boards at home with a little technical know-how. Begin by taking the battery off and separating the rubber button and holder assembly from the circuit board. Use a cotton swab along with some rubbing alcohol to clean around the contacts and plastic frame. This should remove any corrosion that blocks the circuit board from transmitting signals. After reassembling your key fob, verify that it is in programming mode. Usually, this means turning it on and off repeatedly, so make sure to check your owner's manual to find specific instructions. The majority of car manufacturers have videos online that show you how to do this. If you are not confident to complete the task then you can take your key fob into the locksmith that specializes in the model of your vehicle. Certain key fobs that are newer have a built-in receiver that allows you to unlock your trunk and open the doors, as well as turn on the ignition and start your engine from an extended distance. These are generally more reliable and operate over a wider range. If your key fob does not perform as well as it used too it could be due to a faulty internal problem or an external antenna that is not working properly. The most likely cause for a key fob not working is a dead or low battery. It's inexpensive and easy to replace. If the fob's buttons or circuit board has been damaged, you'll need be able to have it repaired professionally and reprogrammed. Most dealerships provide this service but you can also locate a shop that is specialized in the brand of your car. Forgotten Key It's difficult to find the car key fob. It's possible to turn your home upside down by retracing your steps and searching all over. This is a case of searching in drawers, bags and under couches. Then, you'll discover it. But the best way to prevent losing your key fob is by taking precautions. If you're prone to forgetfulness or have a slight hint of ADD Make multiple copies and hand them out to family and friends so that you won't be in a state of panic and worry for four hours if you lose your key fob. Most cars have key fobs that let you lock and unlock your doors. They also sometimes, set off the alarm or open the trunk. Some of the more advanced models come with even more cool features, like the ability to summon your car using the button. This feature is not available on all models however if your vehicle is one of the ones that can be controlled – the Genesis GV60 or Hyundai Sonata for example – then you're in good hands. The good news is that if you have an extra key fob that's programmed to your car, then you can use it to start your car in the event that you lose your original. You can also reach out to an automotive locksmith and request them create a new key fob that's specifically programmed for your vehicle. Talk to your dealer to determine if a replacement keyfob is available at a lower price. If you don't have an extra key the only method to get your car started is by calling an auto locksmith to come out and make a new key or replace the current key fob with a blank. Dealers are also able to do this but they'll require your car to be towed as well as proof of ownership. These services are relatively inexpensive in comparison to the cost of replacing a key at your dealership.